No, the reason to consider type hints is because it makes it easier to understand existing code and write new code that interacts with it correctly. Comprehensibility and correctness are more important than performace.

I'd say performance is far from the only reason to consider type hints.

> Mypyc compiles Python modules to C extensions. It uses standard Python type hints to generate fast code. Mypyc uses mypy to perform type checking and type inference.

> Mypyc can compile anything from one module to an entire codebase. The mypy project has been using mypyc to compile mypy since 2019, giving it a 4x performance boost over regular Python.

I have not experience a 4x boost, rather between 1.5x and 2x. I guess it depends on the code.

> I don’t know how many people are doing this, but tools like mypyc will use type hints to compile Python code to something faster, like C extensions.